Hertz's operation uses large quantities of prepaid cell phones, on average 500 per week with a standard deviation of 45. The lead time for their own brand of prepaid cell phones is two weeks. What is the standard deviation of demand during their lead time? Show your work on the excel file. 45 phones 64 phones 90 phones 109 phones Inputs Average demand per unit time, D = Lead time, L = SD of demand per unit time, op = Order quantity, Q= Reorder point 500 2 45 125 1,100 Distribution of Demand during Replenishment Lead Time Mean demand during lead time DL = SD of demand during lead time ol = = = Safety Inventory Average Inventory for cell phones Hertz's operation uses large quantities of prepaid cell phones, on average 500 per week with a standard deviation of 45. The lead time for their own brand of prepaid cell phones is two weeks. What is the standard deviation of demand during their lead time? Show your work on the excel file. 45 phones 64 phones 90 phones 109 phones Inputs Average demand per unit time, D = Lead time, L = SD of demand per unit time, op = Order quantity, Q= Reorder point 500 2 45 125 1,100 Distribution of Demand during Replenishment Lead Time Mean demand during lead time DL = SD of demand during lead time ol = = = Safety Inventory Average Inventory for cell phones